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Thermal behaviour of poly(dimethylsiloxane) hybrid silicas prepared by radiation grafting |
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| Authors: | Ornella Ursini Giancarlo Angelini Edo Lilla Donatella Capitani Franco Cataldo Claudio Villani |
| Institution: | 1. Institute of Chemical Methodologies, CNR, Area della Ricerca di Roma 1, 00015, Monterotondo, Rome, Italy 2. Lupi Chemical Research Institute, Via Casilina 1626/A, 00133, Rome, Italy 3. Dipartimento di Chimica e Tecnologie del Farmaco, Università “La Sapienza”, Rome, Italy |
| Abstract: | This paper reports our investigation regarding the thermal properties of new polymer-silica hybrid materials obtained by radiation grafting. The polymer poly(dimethylsiloxane),bis(3-aminopropyl)terminated is γ-grafted on a silica gel surface. The thermal behaviour of γ-grafted hybrid materials reveals remarkable differences compared to the thermal behaviour of physically adsorbed polymers. These differences allow us to assess the ability of γ-rays to produce a polymer chemically bonded on a silica surface. The chemical bonds formed by irradiation give to the polymer a high conformational stability confirmed by DTA analysis. |
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